World: r4wp

Does anyone know how to change a float into an integer or round a 
float to its nearest integer counterpart?

dunno, maybe via type casting? as integer! ... but not sure if it 
works for floats, or only pointers ...

http://static.red-lang.org/red-system-specs.html#section-4.9

The current partilal support for float does not support casting between 
float and integer datatypes

It seems float to integer is not allowed. Maybe some library call 
wrappers will be needed for that?

Support for converting between integer! and float!/float32! has not 
been implemented yet. The only way to achieve it right now is to 
rely on an external lib (libc?) or implement your own conversion 
routine in Red/System.

Yes, the C library binding can do that

FYI, I am making good progress on the Red runtime, but I had to start 
implementing the Red compiler earlier than planned, to be able to 
define more accurately the right runtime API that the compiler needs. 
So at the time that the runtime will be ready, I should have a first 
Red compiler partial implementation working.

Sounds logical to me

round-ceiling and round-floor in math.reds do rounding to integer, 
but they still return a float value

To convert to an integer value, you have to go through strings. You 
can use the format function in C-library.reds for that, but I see 
I haven't defined a shorter float wrapper yet

Doc - we are watching your progress via the Twitter messages, and 
looking into Github :-)

I've added some floating point convenience wrappers matching the 
other data types

This should work for conversion:

to-integer form-float

Note that the string returned by form-float should be freed

The other way around is already used in my Fibonacci and Mandelbrot 
time processing:

to-float form-integer

On Linux, you could also avoid going through strings and use lrint(3)/lrintf(3).

Is that GLibC specific?

ISO C 99

OK, that could be considered as a binding enhancement, then

Should work on anything except Windows.

Once the Red runtime is more fleshed out I'll see what is still useful 
to add in Red/System

Windows doesn't support C99?

Nope.

Sigh

I wrote a binding with the Evince document viewer for the Document 
Freedom Day tomorrow:

http://www.documentfreedomday.nl

I now have a GTK widget that can show PDF documents

That's great Kaj!

Wow, that's cool!

I cannot connect to the URL, it seems to timeout on every attempt.

The URL is in dutch

Our server was down for a short while

I also have WebODF running on my WebKit browser and a local Cheyenne, 
so I effectively have a viewer for OpenOffice/LibreOffice ODF documents

Since the browser is in the form of a GTK widget, this viewer is 
also a GTK widget

We're at the Document Freedom Day now. I presented the GTK binding 
and the Evince and WebODF widgets

We also have a presentation by the WebODF author every year :-)

It's just MSC that doesn't support C99. There are other C compilers 
on Windows that do support it.

How well they support it varies, I'm sure, as it does on all platforms.

Do they come with C libraries that you need to install to get these 
functions?

In this DocumentFreedomDay-2012-playlist you can also find the film 
of Kaj's presentation about Red bindings with WebODF, LibreOffice 
and PDF last week in the Royal Library in The Hague, the Netherlands.

http://www.youtube.com/watch?v=UzdT9s-CfdE&list=PL2736E5F6878491D9&index=5&feature=plpp_video

http://www.documentfreedomday.nl/2012/WebODF-LibreOffice-Evince.html

So that's what Kaj looks like! Kaj, you have a very kind face. :-) 
 It is an excellent quality video as well. Of course I have very 
little idea of what you are saying but once you get to the code, 
it's familiar. Thanks Bas for posting this.

Thanks. :-) I tried to make the text on screen as readable as possible, 
because it was small on the previous video. Of course, this one is 
in Dutch. Maybe we can combine English speech and big text in the 
next one :-)

I hope Doc is OK and working on RED like mad :-) Last commits are 
12, 16 days old :-)

He said that he has started work on the Red compiler in parallel 
to the Red runtime but isn't ready to commit the compiler to Github 
yet.  He told me that the runtime was likely to change as he was 
developing the compiler, so I guess that he feels that it is not 
worth commiting code that he feels is not stable.

Thanks for some news.

Btw - I also noticed Doc mentioning during the conference, that he 
might make a Red a bit more dynamic than he first thought?